Replacing UMO electronics fan by 2 12V fans

[tomkalei 0]

Hi!

This is my first post here.

The electronics fan on my Ultimaker original got really noisy. I'd like to replace it with 2 small silent fans like in this design: https://www.youmagine.com/designs/ultimaker-electronics-fan-replacement

I wonder what the voltage of the connector on the board is. The fan that came with the printer has 24V printed on it, but here http://reprap.org/wiki/Ultimaker%27s_v1.5.7_PCB it says the connector would be 12V.

My Ultimaker was built last fall, so I think I have the 1.5.7 board.

Any insights? I don't have a way to measure the voltage at the moment.

Thanks,

Thomas

 

[hreedijk 4]

Take a look at this one, both fan's are connected in parallel:

http://www.thingiverse.com/thing:570165

Indeed, the output on the PCB is 12v.

To my opinion you'll only need 1 50mm 12v fan aiming at the stepper drivers (at least I have on my UMO for almost 2 years).

 

[gr5 2,167]

Consider peeling back the sticker in the center of the fan and if you can see the bearing in there add a drop of oil. I'm sure many fans will work just fine.

Ideally I think you want a "blower" and not a "fan". Fans have blades like a propellor - typically 5 blades. Blowers have typically 30 blades and use centrifugal force and can withstand much more back pressure. I don't know if german suppliers use different words for the 2 kinds of devices.

 

[drayson 75]

Hi!

This is my first post here.

The electronics fan on my Ultimaker original got really noisy. I'd like to replace it with 2 small silent fans like in this design: https://www.youmagine.com/designs/ultimaker-electronics-fan-replacement

I wonder what the voltage of the connector on the board is. The fan that came with the printer has 24V printed on it, but here http://reprap.org/wiki/Ultimaker%27s_v1.5.7_PCB it says the connector would be 12V.

My Ultimaker was built last fall, so I think I have the 1.5.7 board.

Any insights? I don't have a way to measure the voltage at the moment.

Thanks,

Thomas

I have the same issue and also considered the linked fan shroud but then I noted that a part of the ply has to be removed.

Currently I'm working on a remixed drop-in replacement without woodwork but it's not tested nor published up to now...

Regarding voltage I found a note that it might be 19V on the fan socket. Could anybody confirm or reject this??

[jhertzberg 19]

My blower first started making a racket over a year ago. I now pull the shroud off and oil the fan every few months. As gr5 said, you might only need to give it a drop of machine oil.

 

[tomkalei 0]

Thanks everybody.

I will first try to re-oil the stock blower. Actually that is quite obvious once you know that the bearing is right there below the sticker.

To mount the linked printable fan duct, I don't see why part of the ply has to be removed (except the two holes for screws)? Anyway, I now read that it may interfere with a heated bed electronics which I may install later. So I'll reconsider options later.

 

[drayson 75]

I did, but thats not a optimal long term solution... Also due to the mounting direction the oil is running out.

I have not found a similar "quality" blower therefore I'd like to test this 2fan solution...

[leipziger 0]

I take out the rotor and fill everything with grease. So I have the best results. The best thing to do that with a new fan. Oil disappears too quickly. Sintered bronze bearings are normally only oiled, but experience shows that grease is an longer Time active.

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